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THe weights of the 50 football players are normally distributed with a mean of 178 pounds and a standard deviation of 8 pounds.  What is the probability that a player weighs at most 170 lbs?

Guest Jun 1, 2017
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I think this is correct

 

68% of the players fall within one standard deviation.....a player weighing ≤ 170 pounds would lie in the part of the curve to the right of this......so, because of the symmetric nature of the curve, this probability =  

 

[ 100 - 68 ] / 2  =  32 / 2   =   16%

 

 

cool cool cool

CPhill  Jun 1, 2017
edited by CPhill  Jun 1, 2017

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